1 files changed, 1 insertions, 0 deletions
diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index a7a9e0a794..f30eab76fd 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -253,6 +253,7 @@ class SyncRestServlet(RestServlet):
             invite = serialize_event(
                 room.invite, time_now, token_id=token_id,
                 event_format=format_event_for_client_v2_without_room_id,
+                is_invite=True,
             )
             unsigned = dict(invite.get("unsigned", {}))
             invite["unsigned"] = unsigned